Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 187
circular aper-ture into which a glass is fitted,having a film of Selenite ce-mented to it; this Selenite stageor object-carrier being laid uponthe Stage of the Microscope, theslide containing the object is placed upon it; and, by an ingeniousmodification contrived by Dr. Leeson, the ring into which… … Darkers Selenites, as fitted byMessrs. Beck. SWIFTS COMBINATION SUB-STAGE. 13: Fig. 88. of tints given by a Selenite-fimi under Polarized light, is so greatlyincreased by the interposition of a rotating film of Mica, that twoSelenites—red and blue—with a Mica-film, are found to give theentire…
Microscopy · Biology
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